a) Thermosetting plastics are used in saucepan handles
because they do not soften on heating and also they cannot be bent easily
. These plastics like bakelite are poor conductors of heat.
Why the frying pan handles are made of thermosetting plastics Add File?
Answer: Frying pan handles are made with thermosetting plastics which
are resistant to fire and can tolerate heat better than other plastics
. For example, Bakelite is a thermosetting plastic which is a poor conductor of heat and electricity.
Is Pan thermoplastic or thermosetting?
Polyacrylonitrile (PAN), also known as polyvinyl cyanide and Creslan 61, is a synthetic, semicrystalline organic polymer resin, with the linear formula (C
3
H
3
N)
n
. Though it is
thermoplastic
, it does not melt under normal conditions. It degrades before melting.
Why saucepan handles are made of thermoplastics?
II.
Ans. (a) the handles of a saucepan are made of thermosetting plastic
because it is a bad conductor of heat and does not get heated up while cooking
. (b) Electric plugs/ switches/ plug boards are saucepan is made of thermosetting plastic because it is a bad conductor of electricity.
Why are electrical switches plugs and sockets made of thermosetting plastics?
Electric plugs/switches/plug boards are made of thermosetting plastics
because they are poor conductors of electricity reducing the risk of electrocution
.
What are the disadvantages of plastics?
- Natural decomposition of plastic can last from 400-1000 years and few types of plastics are non-degradable as well.
- Plastic materials clog waterways, oceans, seas, lakes etc. …
- Many animals eat plastic materials and die. …
- Plastic is widely used in packaging.
How thermoplastics are different from thermosetting plastics?
Thermoplastics have secondary bonds
between molecular chains
. Thermosetting plastics have primary bonds between molecular chains and held together by strong cross-links. Thermoplastics have low melting points and low tensile strength. Thermosetting plastics have high melting points and tensile strength.
Is thermoplastic material?
Thermoplastic materials are one of the
many types of plastics known for
their recyclability and application versatility. They are formed when repeating units called monomers link into branches or chains. Thermoplastic resin softens when heated, and the more the heat is administered, the less viscous they become.
Is PVC a thermosetting plastic?
Examples of thermoplastic types are PVC (Polyvinyl Chloride) and PE (Polyethylene). Examples of thermoset types include rubber insulations such as silicone rubbers and EVA (Ethylene-Vinyl Acetate). PE and PVC may also be cross-linked making them
thermosetting
types.
Why do we use thermosetting plastics?
Thermosoftening (also called thermoplastics) are plastics which
will soften when heated and can be reshaped
. Thermosetting plastics are plastics do not soften on heating. They are used when resistance to heat is important (eg kettles, plugs, laptop chargers etc).
What are the example of thermoplastic?
Common examples of thermoplastics include
acrylic, polyester, polypropylene, polystyrene, nylon and Teflon
. These materials see a wide variety of use in manufacturing products from clothing and non-stick cookware to carpets and laboratory equipment.
What are saucepan handles made of?
Handles of frying pans and knobs of pot lids are made of
thermosetting resins
. Because these resins have good electrical characteristics, they were used for switches and sockets of electric lamps. However, because of their poor productivity, they have been replaced gradually by thermoplastic resins.
What are thermoplastics Class 8?
1)Thermoplastic
A plastic which can be softened repeatedly by heating and can be moulded into different shapes again
and again is called thermoplastic.
What thermosetting plastic is used for plug sockets?
Melamine
is a thermosetting plastic which is resistant to fire and can tolerate heat better than other plastics. Hence, electric witches, plugs and sockets made of thermosetting plastics.
What would happen if we make electric switches with thermoplastics?
Answer: suppose if electric switches are made by thermoplastics it is
a good conductor of heat when these are heated they lost their shape
.So the electric equipment will be destroyed and may lead to electric shock.
Is Bakelite a thermosetting plastic?
Bakelite contains cross links, or heavily branched polymer chains. Bakelite polymer, upon heating is hardened and cannot be softened again. Hence, it is a
thermosetting polymer
.
